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Release July 2009 User Manual 7700, 7701, 7740
Clinical Use - All Models
The 7700 Series Continuous Suction Regulators are designed to provide accurate control of wall suction for use in
suction therapy procedures in the operating, recovery, intensive care unit, labor and delivery, neonatal, pediatrics,
patient bedside, and emergency room.
Warnings - All Models
This product is intended for use by or on the order of a physician. It is to be used by individuals who are properly
trained in medical suctioning procedures. Please read these instructions carefully.
Suction regulators must only be attached to vacuum systems. Do not attach to compressed air, nitrogen, or oxygen
sources.
Suction catheters, collection canisters and suction tubing must be carefully evaluated and selected to ensure
adequate function for the specific clinical environment and intended field of use.
There have been reports of increased intracranial pressures associated with endotracheal suctioning procedures.
"Persistent, increased ICP has been associated with neurological damage and fatalities". (Health Care Product
Comparison Systems, Regulators, Suction, ECRI Plymouth Meeting, PA Oct'97).
Caution - All Models
Always verify regulator operation (Droop) before use on a patient. "Droop" is the variation in indicated suction as
flow in the collection circuit changes from an occluded condition to a free flowing condition. We measure droop as
the change in indicated suction from no flow to full flow using a typical collection circuit with a 14 French catheter.
Occlude the 14 Fr catheter, set the regulator to 100 mm Hg and then allow flow. The change in the indicated
suction level is "Droop".
Intermitting Regulators: The automatic return of the patient circuit to atmosphere may not eliminate the need for
catheter tip irrigation. As with any automatic system, it is important to monitor the results to be sure that drainage is
occurring in a safe efficient manner. The fact that the intermitter is cycling is not an indication that effective
drainage is occurring.
Installation - All Models
All Boehringer suction regulators are supplied with 1/8” NPT female ports. This facilitates simple adaptation to any
quick connect system. Most fittings are available from Boehringer to adapt to your quick connect system. Contact
the factory for additional information.
1. Assemble desired male quick connect to the outlet on the back of the regulator using thread sealant.
2. Assemble the desired inlet fitting to the bottom of the regulator using thread sealant.
The regulator is now ready to be placed in service on your suction system.
Collection canisters are mandatory for all suction procedures. We strongly recommend the use of an overflow
protection device (filter or trap bottle) at all times between the regulator and collection canister. See Accessories at
the end of this manual.
Operation – Continuous Models 7700, 7701 and 7740
Models 7700 and 7740 incorporate a 3-way control valve with OFF, REG, and LINE. Model 7701 does not have a
control valve and constantly provides suction at the indicated level. The 7701 can be turned OFF by turning the
adjusting knob all the way in.
OFF: With control valve in the OFF position, suction is off and the collection circuit is returned to atmospheric
pressure by an internal vent port, a special feature of the Boehringer design.
REG: With control valve in the REG position, wall suction may be controlled to a specific level by turning the large
adjusting knob in the direction indicated. A spring opposed diaphragm assembly precisely controls the level of
suction provided at the lower port of the Regulator within the range of the gauge. This assembly "senses" changes
